Cable system



Feb. 15, 1927. a J. SIEFARTH 1,617,351

CABLE SYSTEM Filed A112. 10, 1925 Patented Pet 15, 192 7.

UNITED STATES PATENT OFFICE,

CHESTER J. SIEFARTH, F PORTLAND, OREGON, ASSIGNOR TO WILLAJVIETTE IRON &STEEL WORKS, OF PORTLAND, OREGON, A CORPORATION OF OREGON.

CABLE SYSTEM.

Application filed August 10, 1925. (Serial No. 49,324.

This invention is particularly designed for use in relation to high leadlogging systems. lVith such systems it is desirableto relieve the mastof as much of the side strain as possible and the present invention isdirected to the mounting of the blocks at the mast in a convenientmanner and one designed to relieve the mast of as much as possible ofits side strain. Features and details of the invention will appear fromthe specification and claims. a

The invention is illustrated in the accompanying drawing wherein isshown a side elevation of the system.

1 marks the mast, 2 the guy lines of the mast, and 3 the high lead line.This lead line is carried over a sheave 4. The sheave is connected by ashackle 5 with a supporting plate 6. The supporting plate 6 is connectedby a swivelled shackle 7 with a mounting 8 on the side of the mast. An.upper heel block 9 is secured to the supporting plate 6 by a shackle 10and a heel block line 11 extends from the floating block to an anchorblock 12. The anchor block is anchored through cables 13. The heel blockline is carried through the usual sheaves in the blocks 9 and 12 and iscarried over a pulley 14 shown in dotted lines mounted in an extension15 on the anchor or standing block frame and over a pulley 16 shown indottedlines on an extension 17 on the upper or floating block frame. Itwill be noted that when strain is put on the lead line 3 this sidestrain is carried directly to the heel block line so I tion with theheel block that thestrain on the mast is approximately in line with themast. The swinging of the support 6 permits the blocks and sheaves toadjust themselves to accomplish this purpose. The extensions operatingin connecprevent the twisting of the blocks. 9

That I claim as new is 1. In a cable system the combination of a mast; ahigh'lead line; a sheave for the high lead line over which the lead lineis deflected and operated; a heel block line;

and a common swinging support for the sheave and heel block line on themast conveying the side strain direct from the high lead line to theheel block.

'2. In a cable system, the combination of a mast; a high lead line; asheave for the high lead'line over which the lead line is deflected andoperated; a heel block line;

and a common support for the sheave and my hand. V CHESTER J. SIEFARTH.

